If you thought Audi’s 2010 S4 was fast as it is, you’re in for a treat — The guys over at MTM have worked their magic and were able to up the car’s ante by a full 97HP with nothing more than an updated ECU and underdrive pulley.
This means an Audi S4 with the ~$3,500 MTM tuning kit will be able to produce a full 430HP, 380 pounds of torque and sprint from 0 – 60MPH in just 4.6 seconds. Any takers?
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Tags: audi s4, ecu, mtm tuning, pulley, tuner, underdrive
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